CVE-2026-42075 Evolver: Path Traversal via `--out` flag in `fetch` command allows Arbitrary File Write
Attackers can write arbitrary files to the filesystem via the fetch command's output flag, potentially overwriting critical system files.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-42075?
CVE-2026-42075 is a high-severity path traversal vulnerability in EvoMap evolver, published on 4 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Evolver is a GEP-powered self-evolving engine for AI agents. Prior to version 1.69.3, a path traversal vulnerability in the skill download (fetch) command allows attackers to write files to arbitrary locations on the filesystem. The --out= flag accepts user-provided paths without validation, enabling directory traversal attacks that can overwrite critical system files or create files in sensitive location. This issue has been patched in version 1.69.3.
Weakness: CWE-22
Which versions are affected by CVE-2026-42075?
2 open source packages ship an affected version, including @evomap/evolver.
| Package | Affected | Fixed in |
|---|---|---|
@evomap/evolver npm | All versions | 1.69.3 |
@evomap/evolver npm | All versions | 1.69.3 |
How do I fix CVE-2026-42075?
Upgrade @evomap/evolver to 1.69.3 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-42075 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-42075 exists.
Sources
Also known as GHSA-r466-rxw4-3j9j.